need some help

[chad64chevy]

This is all going in my 64 c-10, I got the PAC IS75, the PAC LC-1, 120g ipod classic, and a 1800 watt kenwood amp! I'm plan on getting 2- 12" kenwood shallow mount subs mounted behind the seat, 6.5 and tweeters in custom kick panels! 2- 3.5 or 4.5 speakers to go in the center factory dash spot, all components will be kenwood! I'm trying to figure out how I would run the PAC IS75 with maybe more then one amp to run the smaller stuff! or if I need a different amp to bridge the two! or just get a rca jack Y cable to run more then one amp

I have a radio delete plate I'm going to run so it don't look like I have a system!! thanks for your help